Tunneling induced spin dynamics in a quantum dot-lead hybrid system
Abstract
Semiconductor quantum dots (QDs) offer a platform to explore the physics of quantum electronics including spins. Electron spins in QDs are considered good candidates for quantum bits in quantum information processing, and spin control and readout have been established down to a single electron level. We use these techniques to explore spin dynamics in a hybrid system, namely a QD coupled to a two dimensional electronic reservoir. The proximity of the lead results in relaxation dynamics of both charge and spin, the mechanism of which is revealed by comparing the charge and spin signal. For example, higher order charge tunneling events can be monitored by observing the spin. We expect these results to stimulate further exploration of spin dynamics in QD-lead hybrid systems and expand the possibilities for controlled spin manipulations.
Cite
@article{arxiv.1608.07646,
title = {Tunneling induced spin dynamics in a quantum dot-lead hybrid system},
author = {Tomohiro Otsuka and Takashi Nakajima and Matthieu R. Delbecq and Shinichi Amaha and Jun Yoneda and Kenta Takeda and Giles Allison and Peter Stano and Akito Noiri and Takumi Ito and Daniel Loss and Arne Ludwig and Andreas D. Wieck and Seigo Tarucha},
journal= {arXiv preprint arXiv:1608.07646},
year = {2019}
}
Comments
5 pages, 4 figures